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2017年计算机等级考试二级C++辅导:位域具体存放数值测试

2017-05-04 17:37:00 来源:无忧考网

  #include

  #include

  using namespace std;

  void main()

  {

  struct test

  {

  //在这里测试就可以发现其规律,有无unsigned、a:1 a:2 a:4 a:8 a:16 a:32 以及用char的各值来试验就可发现位域的规律

  unsigned int a:8;

  };

  test t1;

  t1.a = 0;

  cout<<"十进制 -> 0: "<

  cout<<"十六进制-> 0: "<

  cout<

  t1.a = 1;

  cout<<"十进制 -> 1: "<

  cout<<"十六进制-> 1: "<

  cout<

  t1.a = 2;

  cout<<"十进制 -> 2: "<

  cout<<"十六进制-> 2: "<

  cout<

  t1.a = 3;

  cout<<"十进制 -> 3: "<

  cout<<"十六进制-> 3: "<

  cout<

  t1.a = 126;

  cout<<"十进制 -> 126: "<

  cout<<"十六进制-> 126: "<

  cout<

  t1.a = 127;

  cout<<"十进制 -> 127: "<

  cout<<"十六进制-> 127: "<

  cout<

  t1.a = 128;

  cout<<"十进制 -> 128: "<

  cout<<"十六进制-> 128: "<

  cout<

  t1.a = 129;

  cout<<"十进制 -> 129: "<

  cout<<"十六进制-> 129: "<

  cout<

  t1.a = 253;

  cout<<"十进制 -> 253: "<

  cout<<"十六进制-> 253: "<

  cout<

  t1.a = 254;

  cout<<"十进制 -> 254: "<

  cout<<"十六进制-> 254: "<

  cout<

  t1.a = 255;

  cout<<"十进制 -> 255: "<

  cout<<"十六进制-> 255: "<

  cout<

  t1.a = 256;

  cout<<"十进制 -> 256: "<

  cout<<"十六进制-> 256: "<

  cout<

  t1.a = 257;

  cout<<"十进制 -> 257: "<

  cout<<"十六进制-> 257: "<

  cout<

  t1.a = 258;

  cout<<"十进制 -> 258: "<

  cout<<"十六进制-> 258: "<

  cout<

  t1.a = 259;

  cout<<"十进制 -> 259: "<

  cout<<"十六进制-> 259: "<

  cout<

  t1.a = 260;

  cout<<"十进制 -> 260: "<

  cout<<"十六进制-> 260: "<

  cout<

  t1.a = 261;

  cout<<"十进制 -> 261: "<

  cout<<"十六进制-> 261: "<

  cout<

  t1.a = 262;

  cout<<"十进制 -> 262: "<

  cout<<"十六进制-> 262: "<

  cout<

  t1.a = 263;

  cout<<"十进制 -> 263: "<

  cout<<"十六进制-> 263: "<

  cout<

  t1.a = 264;

  cout<<"十进制 -> 264: "<

  cout<<"十六进制-> 264: "<

  cout<

  t1.a = 65533;

  cout<<"十进制 -> 65533: "<

  cout<<"十六进制-> 65533: "<

  cout<

  t1.a = 65534;

  cout<<"十进制 -> 65534: "<

  cout<<"十六进制-> 65534: "<

  cout<

  t1.a = 65535;

  cout<<"十进制 -> 65535: "<

  cout<<"十六进制-> 65535: "<

  cout<

  t1.a = 65536;

  cout<<"十进制 -> 65536: "<

  cout<<"十六进制-> 65536: "<

  cout<

  t1.a = 65537;

  cout<<"十进制 -> 65537: "<

  cout<<"十六进制-> 65537: "<

  cout<

  }

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